It was a more involved process than I expected to build it. You need welding skills and a way to cut the metal. Ron had 22 hours of work in the oven, stretched out over several weeks which was much more than I expected. We were of course winging it most of the time. The drawing we used was not drawn to scale and many key measurements were missing entirely. Ron complained about that fact a lot,
But it turns out most of those measurements were not critical and rocket stove technology is very forgiving. I would recommend making one if you have the skill to weld. We used a plasma cutter to cut the barrels, but you could easily use something else. You need 4 barrels, one with a removal lid for the main oven barrel is preferred, but not mandatory, and one smaller than 55 gal for the oven its self. The other 2 barrels are used as a base and a cover over the top to hold down the insulation. It truly does work well and I have had it over 500 degree, just to see how hot it will get. To bake at 375 degrees you only need 3 small sticks and a hot bed of coals. If you have the skills I would go for it.
Never doubt that a small group of dedicated people can change the world, indeed it is the only thing that ever has.